code-extension.bash

#!/usr/bin/env bash
# shellcheck disable=SC1000

# generate by v3.0.2
# link (https://github.com/Template-generator/script-genrating/tree/v3.0.2)

# set -x #DEBUG - Display commands and their arguments as they are executed.
# set -v #VERBOSE - Display shell input lines as they are read.
# set -n #EVALUATE - Check syntax of the script but don't execute.

#/ -----------------------------------
#/ Description:  vscode extension manager
#/ -----------------------------------
#/ Create by:    Kamontat Chantrachirathunrong <kamontat.c@hotmail.com>
#/ Since:        09/09/2018
#/ -----------------------------------
#/ Error code    1      -- error
#/ -----------------------------------

is_integer() {
	[[ $1 =~ ^[0-9]+$ ]] 2>/dev/null && return 0 || return 1
}

# @helper
throw() {
	printf '%s\n' "$1" >&2 && is_integer "$2" && exit "$2"
	return 0
}

# @helper
throw_if_empty() {
	local text="$1"
	test -z "$text" && throw "First parameter must be action." 1
	return 0
}

is_parameter() {
	if [[ $2 == "less-than" ]]; then
		[[ "$1" < "$3" ]] || [[ "$1" == "$3" ]]
	elif [[ $2 == "greater-than" ]]; then
		[[ "$1" > "$3" ]] || [[ "$1" == "$3" ]]
	else
		return 1
	fi
}

throw_if_parameter() {
	is_parameter "$1" "$2" "$3" ||
		throw "Required 2 parameters, 1. action 2. filepath." 2
}

if_command_not_found() {
	command -v "$1" &>/dev/null
}

throw_if_command_not_found() {
	if_command_not_found "$1" ||
		throw "Required $1 command." 3
}

# 1. func -> execute function
# 2. name -> name of this execution
# n. value for each execution
progressbar() {
	local cmd="$1"
	local title="$2"
	shift 2
	IFS=" " read -r -a array <<<"$@"
	duration=$#

	curr_bar=0
	for ((elapsed = 1; elapsed <= duration; elapsed++)); do
		barsize=$(($(tput cols) - 25))
		unity=$((barsize / duration))
		increment=$((barsize % duration))
		skip=$((duration / (duration - increment)))
		# Elapsed
		((curr_bar += unity))

		if [[ $increment -ne 0 ]]; then
			if [[ $skip -eq 1 ]]; then
				[[ $((elapsed % (duration / increment))) -eq 0 ]] && ((curr_bar++))
			else
				[[ $((elapsed % skip)) -ne 0 ]] && ((curr_bar++))
			fi
		fi

		[[ $elapsed -eq 1 && $increment -eq 1 && $skip -ne 1 ]] && ((curr_bar++))
		[[ $((barsize - curr_bar)) -eq 1 ]] && ((curr_bar++))
		[[ $curr_bar -lt $barsize ]] || curr_bar=$barsize

		printf "%-15s |" "$title"

		# Exection
		"$cmd" "${array[elapsed - 1]}" || exit $?

		# Progress
		for ((filled = 0; filled <= curr_bar; filled++)); do
			printf "#"
		done

		# Remaining
		for ((remain = curr_bar; remain < barsize; remain++)); do
			printf " "
		done

		# Percentage
		printf "| %s%%" $(((elapsed * 100) / duration))

		# Return
		printf '\r'
	done
	echo
}

install() {
	"$code" "--install-extension" "$1" &>/dev/null
}

code="code"
action="$1"

throw_if_empty "$action"
throw_if_parameter "$#" "less-than" 2
if_command_not_found "code" ||
	code="code-insiders"

throw_if_command_not_found "$code"

if [[ "$action" == "e" ]] ||
	[[ "$action" == "exp" ]] ||
	[[ "$action" == "export" ]]; then
	"$code" --list-extensions >"${2}.extension"
elif [[ "$action" == "i" ]] ||
	[[ "$action" == "imp" ]] ||
	[[ "$action" == "import" ]]; then
	IFS=$'\n' read -d '' -ra arr <"$2"
	progressbar install "Installation" "${arr[@]}"
elif
	[[ "$action" == "I" ]] ||
		[[ "$action" == "inter" ]] ||
		[[ "$action" == "active" ]] ||
		[[ "$action" == "interactive" ]]
then
	IFS=$'\n' read -d '' -ra arr <"$2"
	for ext in "${arr[@]}"; do
		printf '%s%s\n' "https://marketplace.visualstudio.com/items?itemName=" "$ext"
		printf 'Install this? [Y/n] '
		read -rn1 ans
		if [[ "$ans" == "Y" ]] || [[ "$ans" == "y" ]]; then
			install "$ext" && echo "  Completed." || echo "  Failure!"
		else
			echo "  Reject."
		fi
	done
else
	echo "Error: This parameters is not correct." && exit 4
fi